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许多地质工作者研究了花岗岩型铀矿床的成矿机理后认为,铀源主要从岩体本身或围岩的富铀层位中汲取。以往浸出实验用来作为判断铀源的工作方法,浸出率的高低被作为衡量铀源好坏、贫富的尺度。我们认为,岩石中铀的浸出率只反映成岩成矿后现代铀的活动特点,是铀元素历史演化的结局,很难反映铀元素在历史上的迁移特征。但是,由于铀的现代活动性状是铀在历史上活动的继续和延伸,所以现代铀的活动性状及其控制因素的研究,还是可以作为人们了解铀在整个历史上活动特点的对比依据。因此,花岗岩中铀汲取控制因素的实验础究仍然具有重要意义。
Many geologists have studied the mineralization mechanism of granitic uranium deposits and concluded that the uranium source is mainly derived from the uranium layer of the rock mass itself or the surrounding rock. In the past, the leaching experiment was used as a working method to judge the uranium source. The leaching rate was used as a measure of the uranium source and the rich and poor. In our opinion, the leaching rate of uranium in rock only reflects the characteristics of the activity of modern uranium after diagenesis and mineralization, and is the result of the historical evolution of uranium. It is difficult to reflect the historical migration characteristics of uranium. However, because the modern activity of uranium is the continuation and extension of uranium’s activities in history, the study of the activity characteristics of uranium and its controlling factors in modern uranium can still serve as a contrast basis for understanding the characteristics of uranium in the whole history. Therefore, the experimental study on the controlling factors of uranium absorption in granite is still of great significance.